All the wiring are connected correctly. The main reason seems to be the compatability with Mach 3 and windows 7 seeing as the Mach 3 requires windows XP service pack 2. However, I've used an older version of Mach 3 and I've had better process than the most recent version, Mach3 R3.043.022. The only problem with the old version was of the 3 axis, 1 axis was always non-functional. Any suggestions?